番茄穴盘育苗基质筛选试验

Study on the Selection of Nursery Substrates for Tomato Plug Seedling

用腐熟羊粪、椰糠、腐植酸等原材料,按照不同的体积比例配制成5种复合基质,用于番茄(红利)穴盘育苗,通过测定基质理化性状、出苗率、幼苗生长指标,筛选出番茄穴盘育苗的有机基质。结果表明,基质2(腐熟羊粪、椰糠、腐植酸体积比为3∶5∶2)的理化性状各项指标均能满足番茄育苗要求,出苗率(98.6%)与CK间差异不显著;在苗龄42d时,株高为187.63 mm,茎粗为4.50 mm,叶片数为5.17片,苗期各项形态指标与CK间差异不显著;总干质量为0.63g,干物质含量为11.35%,分别是CK的110.5%,110.7%,显著高于CK;壮苗指数为0.015 g,生长函数(G值)为0.015 g/d,苗期综合指标显著高于CK。基质1,3,4,5的表现一般,基质2栽培的番茄出苗率高,干物质积累快,壮苗指数高,可以替代普通基质用于番茄穴盘育苗。

Taking rotten dung, coconut chaff and humic acid as materials, 5 nursery substrates for tomato（Hongli）plug seedlingwere composed. By measuring the physical and chemical characters of the matrix, the emergence rate of tomato and the growth index oftomato seedling, the organic matrix for tomato seedling growing in tomato acupoint dish was selected. The results showed that the physicaland chemical properties of matrix2（the ratio of rotten dung, coconut chaff and humic acid was3∶5∶2） could meet the requirements oftomato seedling, and the seedling emergence rate（98.6%）was not significantly different with CK. At the seedling age of 42 d, the plantheight was 187.63 mm, the stem diameter was 4.50 mm, and the number of leaves was 5.17. The total dry mass was 0.63 g, and the drymatter content was 11.35%, which was 110.5% and 110.7% of CK, respectively, and was significantly higher than CK. The strongseedling index was 0.015 g, growth function（G value）was 0.015 g/d, and the comprehensive index of seedling stage was significantlyhigher than CK. The matrix 1, 3, 4, and5 are average. The tomato seedling rate of matrix2 culture is high, the dry matter accumulation is fast, and the seedling index is high.